Physiological responses of Rhamdia quelen (Siluriformes: Heptapteridae) to anesthesia with essential oils from two different chemotypes of Lippia alba

ABSTRACT The aim of this study was to evaluate if Lippia alba has different chemotypes according to the chemical composition of the essential oil (EO) considering collection site, and if the EO may have different effects on blood and plasma parameters in silver catfish, Rhamdia quelen, during and immediately after anesthesia. The citral (EO-C) and linalool (EO-L) chemotypes were identified, and both presented similar anesthetic effects for silver catfish. Fish were exposed to two concentrations of each EO, which induced slow and fast anesthesia (100 and 300 µL L-1, respectively). Blood ions did not change at any time of anesthesia induction and recovery and, therefore, the electrolyte balance was not altered. Blood gases oscillated through all exposure and recovery times, but there was an increase in pO2 after 10 min recovery in fish anesthetized with EO-C. Glucose increased in fish exposed to both EOs when compared with the control group. Overall, exposure to both EOs (except 100 µL L-1 EO-L at most times) reduced plasma cortisol levels compared to the control and/or ethanol groups. However, as plasma creatinine levels in fish anesthetized with EO-C were higher than control fish, the use of EO-L is preferable.

Bibliographic Details

Main Authors:	Souza,Carine de Freitas, Baldissera,Matheus Dellaméa, Salbego,Joseânia, Lopes,Jane Mello, Vaucher,Rodrigo de Almeida, Mourão,Rosa Helena Veras, Caron,Braulio O., Heinzmann,Berta Maria, Silva,Lenise Vargas Flôres da, Baldisserotto,Bernardo
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Ictiologia 2017
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100203
Tags:	Add Tag No Tags, Be the first to tag this record!